Granted Patent
Utility
US 4,396,447 · App. 06/367,073
Apparatus and method to maintain positive separation of reactive bands
Inventor:
Francis G. Firth
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Apr 9, 1982
Inventor
Francis G. Firth
Assignee (at issue)
Applied Plastics Co., Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.